隔离是把被保护对象与意外释放的能量或危险物质等隔开。属于下列那种安全措施.A、防止事

题型:单项选择题

问题:

隔离是把被保护对象与意外释放的能量或危险物质等隔开。属于下列那种安全措施.

A、防止事故发生的安全技术措施 

B、减少事故损失的安全技术措施 

C、AB都是

考点:危险化学品安全管理安全管理安全管理题库
题型:单项选择题

卤面是泉港一道传统风味小吃.是由各种配料做成卤汤与面团混起来的.口味香甜、滑润、浓郁,是泉港人逢年过节,或喜庆寿诞请客的礼食.请结合图甲中人体部分生理 活动示意图(①~⑦表示生理过程,l、Ⅱ表示血液类型)和图乙中膈肌的不同运动状态示意图,分析回答有关问题.

(1)卤面中的主料是面条,面条中富含________,最终被消化成________,并经过程(①)和(②)进入A系统,其中完成过程(②)的消化系统中的主要器官________

(2)图甲中发生过程(③)时,膈肌应是图乙中的________ (填“A”或“B”)状态.

(3)营养物质和氧气都要是通过A系统运输的,该系统的勃力器官是________

(4)在细胞内,这些营养最终被分解释放出________,为生命活动提供动力,同时也产生了代谢废物,这些代谢废物排出体外的过程叫排泄,图甲①~⑦中表示排泄途径的是③,________和________ (填图中序号).I的血液类型是________ (填“动脉血”或“静脉血”).

题型:单项选择题

第二节:完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,从短文后所给各题的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。

It was almost Christmas. We wrote to my father, asking him to  36  an artificial tree for us and   _37  it to us in several smaller boxes. Two days before Christmas we were in a  38  . All of the boxes that my father had sent us arrived except for the one with the tree  39 . We decided to wait one more day.

Meanwhile, in Bremerhaven, a young mail clerk  40  a box under a counter. He  41  that someone would be without a tree for Christmas. Although he was closing up and there was no  42_   on Christmas, he processed the mail and got it to Mannheim.

After putting the  43  on the proper shelf, he headed to the snack bar. The place was  44   and he ended up sharing a table. Two men were speaking and the clerk discovered that one of his  45  at the table was working in Mannheim. He said to the man, "You could  46  play Santa for someone in Mannheim tonight if you'd like to." The man  47  to deliver it and the two walked to the mail room to  48  the package.

At home in Mannheim, we were busily  49  to think up some way to put our tree together, but couldn't  50  a workable solution. We were ready to give up  51  the door bell rang. There stood a stranger holding a long  52  carton, our tree trunk. We invited him in,  53  it was Christmas Eve and he was  54  to get home to his own family.

The next day as we watched our little boy's eyes light up at the  55  of our beautiful tree, I whispered a little prayer: "Bless the stranger who brightened up our Christmas with his kindness."

36. A. sell              B. buy              C. deliver                 D. bring

37. A. send            B. pass                 C. carry                 D. take

38. A. surprise          B. hunger             C. pleasure                     D. panic

39. A. leaf            B. trunk                C. stand                 D. branch

40. A. watched        B. caught               C. spotted                D. broke

41. A. directed         B. whispered           C. realized                 D. confirmed

42. A. delivery         B. customer             C. money                 D. letter

43. A. present         B. tree              C. mail                           D. package

44. A. crowded         B. small             C. noisy                  D. normal

45. A. friends          B. colleagues           C. relatives               D. companions

46. A. really           B. confidently        C. kindly                 D. patiently

47. A. overcame       B. agreed              C. astonished             D. struggled

48. A. fetch              B. transform           C. post                       D. consult

49. A. solving          B. explaining          C. trying                 D. worrying

50. A. come across      B. come back to        C. come upon             D. come up with

51. A. while             B. when              C. as                        D. since

52. A. slim            B. beautiful           C. thick                 D. heavy

53. A. but               B. so                  C. because                D. or

54. A. in surprise       B. it, the, way         C. in a hurt7                    D. in lime

55. A. sight            B. back            C. corner                  D. scene

题型:单项选择题

写出下列溶液中溶质的化学式:

(1)石灰水 ______,(2)锌与稀硫酸恰好完全反应后的溶液 ______,(3)食盐水 ______,(4)80mL酒精与20mL水组成的溶液 ______.

题型:单项选择题

医学美容

题型:单项选择题

流动糸统中,若截面上流体的流速、压强、密度等仅随()而变,不随()而变,称为稳定流动。若以上各量既随()而变,又随()而变,称为不稳定流动。

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